Home / 1,992,808.12-2,989,686.52-644,970.76

Finding the Fourth Proportional to 1,992,808.12, 2,989,686.52 and 644,970.76

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Solution

The fourth proportional to 1,992,808.12, 2,989,686.52 and 644,970.76 is: 967,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,808.12 : 2,989,686.52 = 644,970.76 : x
  2. Step 2: Convert to fraction form
    1,992,808.12/2,989,686.52 = 644,970.76/x
  3. Step 3: Cross multiply
    1,992,808.12x = 2,989,686.52 × 644,970.76
  4. Step 4: Simplify right side
    1,992,808.12x = 1,928,260,386,966.16
  5. Step 5: Solve for x
    x = 1,928,260,386,966.16/1,992,808.12
  6. Step 6: Final answer
    x = 967,609.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.